Principia - SskinN review for MIX-01

I was initially afraid of using this serum as I have always used korean brands that use mulder and less aggressive ingredients. Korean products don't usually have salicylic acid in their composition (max 0.5%), and although this serum has 2% of this acid, in addition to alcohol, it didn't make my skin sensitive or reddened. I really liked the results, it helped the acne to heal quickly and it improved the texture of the skin.